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GREYUIT [131]
2 years ago
5

What was the procedure during the first successful vaccination?

Biology
2 answers:
netineya [11]2 years ago
4 0
The smallpox vaccine, introduced by Edward Jenner in 1796, was the first successful vaccine to be developed. He observed that milkmaids who previously had caught cowpox did not catch smallpox and showed that inoculated vaccinia protected against inoculated variola virus
Mekhanik [1.2K]2 years ago
4 0
Sheeeeeeeesssshhhhhhhhh
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Scientific knowledge is always changing. At one time, the kingdom was the
Naddika [18.5K]

Answer:

D

Explanation:

Organisms can be separated into different classifications due to many differences phenotypically or genetically. As we have progressed, research has shown differences allowing us to see bacteria and archaea as different organisms.

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3 years ago
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A grown tiger began its life as a single fertilized egg. Explain why a tiger looks so much different as an adult than it did as
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<span>A tiger looks so much different as an adult than it did as a single fertilized egg because it developed through different stages from being a zygote (fertilized egg), to becoming an embryo (where it experiences intense cellular changes), to becoming a fetus (where it gains a great measure of cell specialization, and develops distinct tissues and organ systems). After birth, the tiger still undergoes further growth and development into adulthood. This is largely regulated by the expression of different genes at different times and also by environmental factors.</span>
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3 years ago
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Hypothesis A: If heart rate is related to caffeine intake, then coffee drinkers will have higher heart rates.
Katen [24]

Answer: D. Hypothesis B is more useful because it suggests a way to test the relationship between heart rate and caffeine intake.

Hypothesis A and B both are suggesting that caffeine intake is related to higher heart rate. But hypothesis B is proving it more certainly by suggesting the affects of caffeine intake on heart rate. As, heart rate of most people will be higher 30 minutes after they drink a cup of coffee is testifying the fact, that higher heart rate is related with caffeine intake.

Therefore, hypothesis B is more useful because it suggests a way to test the relationship between heart rate and caffeine intake.

3 0
3 years ago
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An individual carries a heterozygote (two diff alleles on same gene) which will be located:
swat32

Answer:

B) On the same place on the same chromosome.

Explanation:

Both alleles are located on the same chromosome and present at the same place because genes come in pair. Each pair of gene is located at a specific place on a chromosome. If the two alleles present at a specific location are similar to each other, it is called homo-zygous while on the other hand, if both alleles are different from one another, they are considered as hetero-zygous.

6 0
3 years ago
The world's high rate of coal consumption is causing many negative impacts
LUCKY_DIMON [66]

Answer:

idk lol the answer is A i did it

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